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Question 9 4 pts Which of the following species is amphoteric? A) CO32- B) HF C)...
D Question 7 4 pts Which of the following substances has the lowest solubility in water? A) Hg2Cl2, Ksp = 3.1 x 10-18 B) Caz(PO4)2, Ksp = 2.0*10-29 C) AglO3, Ksp = 3.1 x 10-8 D) CuBr, Ksp = 5.0 x 10-9 Ос OB ОА OD 4 pts Question 8
Which of the following species is amphoteric? NH_4^+ CO_3^2- HPO_4^2- HF None of the above are amphoteric
Question 13 4 pts Which of the following hydrocarbons has one pi bond and one cycloalkane? A) C6H8 B) C5Hg C) C3H8 D) C4H8 OB ОА Ос OD 4 pts
Question 33 2 pts Which one of the following molecules is polar? (a) BC13 (b) Bel2 (c) CCIA (d) CHCl3 (e) Br2 Ос ОЕ OB OD ОА
Question 16 4 pts Which changes is endothermic? A) CO2(g) → CO2(s) B) CO2(g) CO2(0) C) CO2(s) - CO2(g) D) CO2(0) CO2 (s) - → Ос ОА OB OD 4 pts Question 17
Question 6 4 pts Identify the colligative property. A) vapor pressure elevation B) Henderson-Hasselbalch elevation C) boiling point elevation D) freezing point elevation ОА Ос OD OB 4 pts D Question 7
Question 10 3 pts In which of the following sets do all species have the same number of electrons? A) Br", Kr, Sr2+ B)C, N3.02 C) Mg2+, Sr2+, Ba2+ D) 0,02 02 D ОС ОВ ОА
Question 18 4 pts Which, if any, of the following processes is spontaneous under the specified conditions? A) H200) H2O(s) at 25°C B) CO2(s) + CO2(s) at 25°C C) 2H2O(g) + 2H2(g) + O2(g) at 25°C D) C(graphite)C(diamond) at 25°C and 1 atm ОА Ос OB OD Ante
Hydrofluoric Acid has a dissociation constant at 25°C of 6.7 x10-4. If 1.0 mol of HF is dissolved in enough water to give 1.00 L of solution, what is the hydrogen ion concentration in this solution expressed in M? a) 2.0 x 10-2 b) 2.6 x 10-2 c) 3.3 x 103 d) 6.7 x 10-4 e) none of the above Оа Od Ob Ос
4 pts Question 15 Identify the place which has the highest boiling point of water. A) Death Valley, 282 feet below sea level B) a pressurized passenger jet, 35,000 feet C) New Orleans, sea level D) Mt. Everest, 29,035 feet OD OB ос ОА 4 pts Question 16